"Homemade chocolate sandwich cookies with cream vanilla or peppermint filling...."
INGREDIENTS
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1 cup plus 2 tablespoons (223g) granulated sugar
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12 tablespoons (170g) unsalted butter room temperature
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1/2 teaspoon table salt
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1 teaspoon espresso powder optional
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1 large egg
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1 tablespoon (14g) water cold
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1 teaspoon King Arthur Pure Vanilla Extract
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1 1/2 cups (180g) King Arthur Unbleached All-Purpose Flour
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3/4 cup (64g) black cocoa or Dutch-process cocoa
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2 1/2 cups (283g) confectioners' sugar
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1/2 cup (92g) vegetable shortening
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1 teaspoon King Arthur Pure Vanilla Extract*
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2 teaspoons water cold*